The Effects of Extended Photoperiod and Warmth on Hair Growth in Ponies and Horses at Different Times of Year

    January 2020 in “ PloS one ”
    Christiane O’Brien, Megan Ruth Darcy-Dunne, Barbara A. Murphy
    Studysummary In this study, using light masks to extend photoperiod was effective for maintaining the summer coat in horses and accelerating shedding in outdoor horses, but timing was crucial for success.
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    Research cited in this study 6

    1. Resting No More: Redefining Telogen, the Maintenance Stage of the Hair Growth Cycle Biological Reviews · 2014
    2. Seasonal Variation in Hair Follicle Activity and Fiber Growth of Both Male and Female Merghoz Goats in Western Iran Small ruminant research · 2011
    3. Prolactin Delays Hair Regrowth in Mice Journal of Endocrinology · 2006
    4. Prolactin and Its Receptor Are Expressed in Murine Hair Follicle Epithelium, Show Hair Cycle-Dependent Expression, and Induce Catagen American Journal of Pathology · 2003
    5. Effects of Maintaining Solstice Light and Temperature on Reproductive Activity, Coat Growth, Plasma Prolactin, and Melatonin in Goats Reproduction · 1999
    6. The Microanatomy, Cell Replication, and Keratin Gene Expression of Hair Follicles During a Photoperiod-Induced Growth Cycle in Sheep Cells tissues organs · 1995